F Cup One Piece Swimsuits

F cup one-piece swimsuits with genuine built-in support — underwired, structured cups and full coverage that holds its shape in and out of the water. Fitted for an F cup bust, sizes 6 to 20.

F Cup Swimwear | F Cup Bras | Onepiece Swimwear | Plus Size Swimwear
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Rosa Faia Elouise Zip Front Swimsuit BlackRosa Faia Swimwear - Swimsuit Rosa Faia Elouise Zip Front Swimsuit Black
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Rosa Faia Elouise Zip Front Swimsuit Black
Sale price $159.95
Regular price $159.95 Sale price $149.95
Panache Spirit Rita Plunge Swimsuit BlackPanache Spirit Rita Plunge Swimsuit Black
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Panache Spirit Rita Plunge Swimsuit Black
Sale price $189.95
Sale price $189.95
Sale price $189.95
Freya Freestyle UW Moulded Swimsuit Astral NavyFreya Freestyle UW Moulded Swimsuit Astral Navy
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Freya Freestyle UW Moulded Swimsuit Astral Navy
Sale price $134.95
Panache Gingham Paloma Full Cup Swimsuit Blacksg-10-12 Panache Gingham Swimsuit
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Panache Gingham Paloma Full Cup Swimsuit Black
Sale price $169.95
Regular price $164.95 Sale price $129.95
Sale price $169.95
Panache Signature Zadie Full Cup Swimsuit BlackPanache Signature Zadie Full Cup Swimsuit Black
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Panache Signature Zadie Full Cup Swimsuit Black
Sale price $174.95
Fantasie Swimwear - Swimsuit Fantasie Ottawa Twist Front Swimsuit InkFantasie Swimwear - Swimsuit Fantasie Ottawa Twist Front Swimsuit Ink
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Fantasie Ottawa Twist Front Swimsuit Ink
Sale price $154.95
Sale price $154.95
Fantasie Beach Waves Twist Front Swimsuit Bright FuchsiaFantasie Beach Waves Twist Front Swimsuit Bright Fuchsia
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Fantasie Beach Waves Twist Front Swimsuit Bright Fuchsia
Regular price $149.95 Sale price $134.95
Panache Aurora Lara Plunge Swimsuit RedPanache Aurora Lara Plunge Swimsuit Red
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Panache Aurora Lara Plunge Swimsuit Red
Regular price $189.95 Sale price $174.95
Fantasie Swimwear - Swimsuit Fantasie Ottawa Twist Front Swimsuit BlackFantasie Swimwear - Swimsuit Fantasie Ottawa Twist Front Swimsuit Black
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Fantasie Ottawa Twist Front Swimsuit Black
Sale price $154.95
Sale price $154.95
Rosa Faia Elouise Zip Front Swimsuit Passion PinkRosa Faia Elouise Zip Front Swimsuit Passion Pink
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Rosa Faia Elouise Zip Front Swimsuit Passion Pink
Regular price $159.95 Sale price $149.95
Sale price $159.95
Panache Spirit Rita Plunge Swimsuit CobaltPanache Spirit Rita Plunge Swimsuit Cobalt
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Panache Spirit Rita Plunge Swimsuit Cobalt
Sale price $189.95
Sale price $189.95
Sale price $189.95
Primadonna Delray Full Cup Control Swimsuit BlackPrimadonna Delray Full Cup Control Swimsuit Black
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Primadonna Delray Full Cup Control Swimsuit Black
Sale price $299.95
Panache Gingham Paloma Full Cup Swimsuit Red GinghamPanache Gingham Paloma Full Cup Swimsuit Red Gingham
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Panache Gingham Paloma Full Cup Swimsuit Red Gingham
Sale price $169.95
Regular price $164.95 Sale price $129.95
Sale price $169.95
Panache Spirit Rita Plunge Swimsuit RedPanache Spirit Rita Plunge Swimsuit Red
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Panache Spirit Rita Plunge Swimsuit Red
Sale price $189.95
Sale price $189.95
Sale price $189.95
Panache Signature Serena Square Neck Swimsuit BlackPanache Signature Serena Square Neck Swimsuit Black
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Panache Signature Serena Square Neck Swimsuit Black
Sale price $189.95

At F cup, a one-piece is often the easiest swim choice — built-in bra-sized support, full front coverage and nothing to readjust in the water. The one-pieces worth wearing use the same cup construction as a bra: an underwire that lifts from below, structured cups, and adjustable straps.

Choosing a one-piece at F cup

Look for a defined, underwired or moulded cup rather than a flat shelf lining — a shelf bra alone won't support an F cup bust. Adjustable or convertible straps let you set the fit across the shoulders, and side support keeps everything secure when you're swimming.

Styles and brands

Panache Swim, Fantasie Swim and Elomi Swim all make properly supportive F cup one-pieces. Prefer a two-piece? See F cup bikini tops and all F cup swimwear.